Anti B Titre IgM Test
Also known as: Anti-B Titre IgM, GBS Antibody IgM Test, Streptococcus B Antibody Test
Anti B Titre IgM Test test available at DNA Labs India for ₹491. Uses Erythrocyte Magnetized Technology on 2 mL serum from SST tube and 3 mL whole blood in Lavender Top (EDTA) tube samples. Results in Results are typically available the next day after sample collection, provided the sample is received by 9 am.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Kothari Ramesh Shantilal
Consultant Microbiologist · Reg: 27670
Last reviewed: September 7, 2026
Overview
To diagnose and monitor infections caused by Group B Streptococcus (GBS) by detecting IgM antibodies in the blood, aiding in the assessment of current infection and treatment response.
- Test Code
- 134
- Price
- ₹491
- Sample Type
- 2 mL serum from SST tube and 3 mL whole blood in Lavender Top (EDTA) tube
- Result Time
- Results are typically available the next day after sample collection, provided the sample is received by 9 am.
- Fasting Required
- No
- Method
- Erythrocyte Magnetized Technology
Sample Collection
No special preparation required. Inform your doctor about any medications or supplements you are taking.
Method: Venipuncture
Laboratory Analysis
A healthcare professional will collect blood samples from a vein in your arm. The process is quick and typically causes minimal discomfort.
Report Delivery
Apply pressure to the puncture site with a cotton ball to stop bleeding. Avoid heavy lifting with the arm used for the blood draw for a few hours.
Timeline: Results are typically available the next day after sample collection, provided the sample is received by 9 am.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose and monitor infections caused by Group B Streptococcus (GBS) by detecting IgM antibodies in the blood, aiding in the assessment of current infection and treatment response.
How to Prepare
- Collect 2 mL serum from a gold-top SST tube and 3 mL whole blood in a lavender-top EDTA tube.
- Mix blood in EDTA tube gently by inverting several times.
- Ship samples refrigerated at 2-8°C. Do not freeze.
- Label tubes with patient information and ensure no hemolysis.
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"The Anti B Titre IgM test is essential for early detection of GBS infections, particularly in pregnant women, to prevent transmission to newborns and guide appropriate antibiotic therapy."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Samples that are hemolyzed, lipemic, or icteric.
- Improperly labeled or insufficient volume.
- Samples stored beyond stability limits.
Understanding Your Results
Non-reactive (Negative)
No detectable IgM antibodies against GBS, suggesting no current infection or early infection stage. Repeat testing may be necessary if symptoms persist.
Reactive (Positive)
Elevated levels of IgM antibodies, indicating current or recent GBS infection. Clinical correlation and further evaluation recommended.
Equivocal
Borderline results that may require repeat testing for confirmation.
Consult your doctor if you experience symptoms of infection such as fever, chills, or abdominal pain, or if you are pregnant and concerned about GBS exposure. Follow-up on test results with a healthcare provider for appropriate management.
Limitations
- ⚠Cannot distinguish between past and current infections solely based on IgM.
- ⚠False negatives possible in early stages of infection.
- ⚠Results should be interpreted in conjunction with clinical findings and other tests.
Risks & Considerations
- ●Minor bruising or swelling at the blood draw site.
- ●Rarely, infection or excessive bleeding.
- ●Fainting or dizziness in some individuals.
Interfering Factors
- ●Hemolyzed or lipemic samples may affect results.
- ●Recent vaccinations or infections may cause false positives.
- ●Immunosuppressive therapy could impact antibody levels.
Compare With Similar Tests
| Test | Anti B Titre IgM Test | Anti B Titre IgG Test | Group B Streptococcus Culture | GBS PCR Test | Complete Blood Count (CBC) |
|---|---|---|---|---|---|
| Comparison | Anti B Titre IgM Test | IgG antibodies indicate past exposure or immunity, while IgM suggests active infection. | Culture detects the presence of the bacteria directly, whereas antibody tests measure immune response. | PCR identifies bacterial DNA and may be more sensitive for detection, especially in early infections. | CBC assesses overall blood health but is not specific for GBS infection. |
Frequently Asked Questions
What is the Anti B Titre IgM Test?
Why is this test important during pregnancy?
How is the sample collected for this test?
What does a positive result mean?
What are the symptoms of a GBS infection?
Is any preparation required before the test?
How long does it take to get the results?
Can this test detect past infections?
What is the difference between IgM and IgG antibodies?
Is home collection available for this test?
What should I do if my test results are abnormal?
Are there any risks associated with the test?
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